Dynamics. Resolution. Control. Musicality.
All as close to perfection as possible. It’s what characterizes a top class
preamplifier. The soulution 520 meets these challenges and more.
With four line inputs and a high quality phono stage built in, the
soulution 520 is perfectly equipped for all audiophile requirements.
A preamplifier should only amplify or attenuate the music signal, not
change it in any way, while meeting the highest technical specifications.
No distortion, no hum or noise, at the same time achieving the lowest
cross talk and widest bandwidth. The soulution 520 preamplifier
elegantly meets these demands and is a benign load for any source
Unbalanced design ensures the fewest components in the signal path.
Physical separation of the left and right channel provides optimal
separation and cross talk performance. High quality relays switch
between the inputs. Source signals are buffered directly at the input. For
safety, an audio grade coupling capacitor protects the preamplifier as
well as downstream amplifiers and loudspeakers from potential DC
components in source signals.
The 520’s volume control uses only high-precision, low-noise metal foil
resistors, and it controls both the volume and balance. To block
switching peaks during volume changes which may be hazardous to
power amplifiers, the 520 is equipped with a second volume control with
a PGA (Programmable Gain Amplifier). Active only during the volume
control process, it is similar to a potentiometer and enables the volume
to be adjusted in smooth, click-free steps. As soon as the new desired
level value has been selected, the unit returns control to the precision
Multi-stage, similar to that used in the reference 720 preamplifier, it
achieves very fast, ultra wideband (1MHz/-3dB) amplification and is able
to drive the longest interconnects with ease.
Similar to the 720, the phono preamplifier of the 520 is also multi-stage
using the highest grade components.